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Table 5 Regression statistics of linearity experimental results

From: A novel stability-indicating method for known and unknown impurities profiling for diltiazem hydrochloride pharmaceutical dosage form (tablets)

Compound

Concentration

µg mL−1

Multiple

R

Regression equation

F value

P value

Diltiazem hydrochloride

0.12 to 4.84

1.000

y = 63810.96x + 1124.7

11,398

< 0.05

EP Imp.-F

0.18 to 5.65

0.999

y = 78198.34x + 178.13

29,206

< 0.05